95 lines
3.5 KiB
C++
95 lines
3.5 KiB
C++
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// Boost.Geometry (aka GGL, Generic Geometry Library)
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// This file is manually converted from PROJ4
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// Copyright (c) 2008-2012 Barend Gehrels, Amsterdam, the Netherlands.
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// This file was modified by Oracle on 2017, 2019.
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// Modifications copyright (c) 2017-2019, Oracle and/or its affiliates.
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// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
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// Use, modification and distribution is subject to the Boost Software License,
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// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// This file is converted from PROJ4, http://trac.osgeo.org/proj
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// PROJ4 is originally written by Gerald Evenden (then of the USGS)
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// PROJ4 is maintained by Frank Warmerdam
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// PROJ4 is converted to Geometry Library by Barend Gehrels (Geodan, Amsterdam)
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// Original copyright notice:
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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#ifndef BOOST_GEOMETRY_PROJECTIONS_PJ_INV_HPP
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#define BOOST_GEOMETRY_PROJECTIONS_PJ_INV_HPP
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#include <boost/geometry/srs/projections/impl/adjlon.hpp>
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#include <boost/geometry/core/radian_access.hpp>
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#include <boost/geometry/util/math.hpp>
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/* general inverse projection */
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namespace boost { namespace geometry { namespace projections
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{
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namespace detail
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{
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/* inverse projection entry */
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template <typename PRJ, typename LL, typename XY, typename PAR>
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inline void pj_inv(PRJ const& prj, PAR const& par, XY const& xy, LL& ll)
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{
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typedef typename PAR::type calc_t;
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static const calc_t EPS = 1.0e-12;
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/* can't do as much preliminary checking as with forward */
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/* descale and de-offset */
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calc_t lon = 0;
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calc_t lat = 0;
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calc_t xy_x = 0;
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calc_t xy_y = 0;
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if (par.axis[0] == 1)
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{
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xy_x = (geometry::get<1>(xy) * par.to_meter * par.sign[1] - par.x0) * par.ra;
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xy_y = (geometry::get<0>(xy) * par.to_meter * par.sign[0] - par.y0) * par.ra;
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} else {
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xy_x = (geometry::get<0>(xy) * par.to_meter * par.sign[0] - par.x0) * par.ra;
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xy_y = (geometry::get<1>(xy) * par.to_meter * par.sign[1] - par.y0) * par.ra;
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}
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prj.inv(par, xy_x, xy_y, lon, lat); /* inverse project */
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lon += par.lam0; /* reduce from del lp.lam */
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if (!par.over)
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lon = adjlon(lon); /* adjust longitude to CM */
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if (par.geoc && geometry::math::abs(geometry::math::abs(lat)-geometry::math::half_pi<calc_t>()) > EPS)
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lat = atan(par.one_es * tan(lat));
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geometry::set_from_radian<0>(ll, lon);
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geometry::set_from_radian<1>(ll, lat);
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}
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} // namespace detail
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}}} // namespace boost::geometry::projections
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#endif
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